DAIEN Double-Head Twist Drill Bit Stainless Steel Electric Drill High-Speed Metal Drilling and Reaming Double-Edged Drill Set 2.5mm*10

Precise manufacturing ensures smooth surface and sharp drill tip

Drill tip angle of 16° improves drilling ease and accuracy

Not recommended for use on heat-treated materials

Compatible with electric drills, bench drills, and drilling machines

Comes in a complete range of sizes with convenient box packaging for storage

Drilling and punching holes in various hard materials including stainless steel, aluminum alloy, iron, copper, and steel

Ideal for aluminum alloy doors, windows, stainless steel door and window frames, and broken bridge aluminum materials

Total Length / Cutting Length / Diameter

46.8 / 10 / 3.2

48.9 / 15 / 3.2

51.7 / 14 / 3.5

54.9 / 16 / 4.0

54.3 / 16 / 4.2

55.2 / 16 / 4.5

56.1 / 16 / 5.2

56.8 / 16 / 5.2

58.0 / 16 / 5.5

66.0 / 16 / 6.0

Securely clamp the double-ended drill bit in the drill chuck with minimal exposed length

For holes larger than 6mm, pre-drill with smaller bits (3.2-4mm) before enlarging with bigger bits

Drill tip should not be overly sharp to prevent breakage

Dimensions are manually measured and may have slight deviations; please refer to the actual product.

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